Fans of TreeHugger's book reviews know there are dozens of great books about the environment. That's why TreeHugger has decided to partner with Island Press, a respected publisher of environmental books for 27 years. Each month, readers have the opportunity to buy the featured book at a substantial discount.

The latest BookHugger selection, City Rules: How Regulations Affect Urban Form, by Emily Talen, is available at a 30% discount to TreeHugger readers. Simply visit Island Press via this link and use the coupon code 2HUG.